Join Ben Long for an in-depth discussion in this video Using an alternative mount lens, part of Foundations of Photography: Specialty Lenses.
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Your camera has a very specific lens mount, and most camera vendors make their own custom mounts.…So, for example, you can't just take a Nikon lens and stick it on your Canon camera; I…mean that would just be wrong, wouldn't it?…Not necessarily, because you can get adaptors that will let you use lenses designed for other mounts.…This is a very easy way to gain access to entire ranges of lenses.…Many video shooters, for example, who use Canon cameras use adaptors to gain access to certain…Nikon lenses because of their manual controls.…
Adaptors also make it possible to use older lenses that are no longer made.…Canon used to make a 50-mm f/0.95 lens that you can still sometimes find for sale used.…It uses an older Canon lens mount that isn't supported by your EOS camera, but with the…right adaptor you can get it to work.…Here we're using a lens adaptor to attach a 21 mm f/2.8 Zeiss lens to this Canon EOS 5D Mark III.…What's great about this lens is that it's fantastically sharp.…So this is a case where I'm using an adaptor to get access to a lens with better quality…
The course begins with a look at several common and inexpensive lens attachments, from polarizers to neutral density filters. The course then explores ultra-wide angle and fisheye lenses as well as ultra-long telephoto and macro lenses. The course concludes with a look at tilt-shift lenses, which are useful for architectural photography and special effects, and at offbeat lenses, such as Lensbaby and Holga attachments.
The course also contains Photoshop postproduction advice and examples that illustrate the creative possibilities that an expanded lens collection provides. And because some specialty lenses are extremely expensive, the course also contains advice on renting gear.